Knife-switch.



C. SCHUSTER.

KNIFE SWITCH. APPLcATIoN FILED JULY e. 1909 1,086,622, Patented Feb. 1o, 1914.

Iliff/11111111101- oem, somrs'rnn, or BELLEVUE, rENNsYLv-Anm. Assieme or aun-nem* To CHRISTIAN N. BERGMANN, OF PITTSBURGH, PENNSYLVANI.

mesme;

To (LZZ 'whom t may cono-wn s e it known that; l, CARL Scnusrn, a citizen yot the United States, refait-ling at ellevue, inI the county of Allegheny and State ot Pennsylvania, have invented certain new. and useful Improvements in Knife- Switohes, oLt which the followingis` a specification, reference being had therein to the accompanying d-rawind.

My inventionoonsists in :in in'iproven'ient in knife ewitehes und particularly olesigned to provide :i switch of large ampere ruiiuCit-y und :imple Contact urea with the requieite -estrengtln e'llie'ioncy tor the objects. in ,View and simplicity and cheupness of -sonst'ruotioihln switches of this type it is desirabletzo provide good Contact area und conducting cross section for the current, for which purposes l have Vprovided u plurality of .contacting elemente and a corresponding' pluralityof Connecting Sivit-rh blades mounted on an insulating base, in the manner hereinafter more fully described.

In the drawings accompanying' the Jpplication: Figure l isa View o1 the device in side elevation. Fig. 2 is a plan View oi Fig. 1. Fig. 3 is a cross sectional View on the line Ill'. lll; of Fig. 1, showing continuous Contact oonduetors. Fig. -iis n. Similar vioiv showing a moditied construction und oomlnuing u plurality of binde contacts with' conducting bueI bur coni'ieot'i'ons. Figs. 5 and are similar views showing 'further modified, constructions.

-2 represente1 the base of the Switch ol any aitiituble forni. und construrtion, ot inertial'.-

zie shite. ete.. adopted to be mounted. on u switch bonrtl or elsewhere lor operation with the elen'ionte to be coi-nuzrted. Lilie all switches ot' this type. the bus-eds proviiled gent-molly with eoiufluet-ing ineinbere Connected with the terminals of the on cuit eonluetifirs 3 und und u movable su'itf'h blade or bludee pivot'nlly mnineeted to one set oi suf-h. vonduetors; and adapted to establish inarie-end-breul oonnertion with the other terminal.

In my construction l. provide for the de sired uren ot' Contact und ooiidnrting ellieienc'v b'v neei'nl'iling :it :i suitableloeution on tlio lihse, u pliufulitji of t'foi'idurtore I', for the pivotul'mounting ot? the blades t5 und e.' similar plurulitiof contacting* Moorhen; T for engagement by the hinder.

T he groups of conductors and 'i are gen- Specication of Letters 'atent.

KNIFE-SWITCH.

Patent-,mi heb. to. i

Application mea July s, 1905. semi no. 506,0541.

orally alike in construction and number und eaoh. group consists,- o'f sets of poire o? tint' bars as indicated in the cross; Sectional View,

Eig. 3, which in such form are shown oon-= .tinuous :und are indicated by the -numerxil t number of euch pair of ,bars s :ire rigidly held in their relative position to each other and to the base 2 separatore which need not however, be insulating sepurators, inasn'iuoh as the enti-re series of hors 7 constituting the complete conductor "e" are intended to .f-arry the Whole Current, the objectbeing' to provide :imple irren :for corr toot'.v of the blades 6.

Thebe-rs are embraced by u rectangulait'ruine 9 mounted upon 'the buse Z und eecuredthereon by holding bolts l0, while transverse bolts or 'rivets ll extending through opposite sides ot the traine St and through all of the here tixedly sec-ure them in position. At. their other onus, the bars Vere all secured in Contact. with any Suitable Connection conductors, :is but; bur

.or other similar connect-ing elements l2, with which the Current Conducting' terminal vomA niunit'zates, by suitable chinipinf devices. The upper end of the contacting Dare T :ire preferul'al)7 divided :is indicated in Fig. Lto insure euthfzient resiliency to milko proper engagen'ient with the bludee 6 und muy be suitably7 'formed otherwise to insure proper insertion und Contact oit the bladesa. Yifhe corresponding `ogroupof conductors :Bie Similzirllif7 mounted in the base 52 sind between euolipair of conductors are mounted by a pivoting bolt' 18 the several bludee ti in the nmn'ner usual with switches of thia` typo. The other ends or' the conductors D :ire suns-- lurl)Y connected with bus bare or other zeondoctorsj lll-v by which connection runde to the other terminal ot' the circuit, :is will be readily understood. The blades G, which Correspond in nui'nber to the iiuu'nber oif pairs of the Contact' und conducting here' und are provided :it their front. ends: with :i handle of any suitable ronstrueiiun,

ronnoeted with the blades by suitable. oi;- 'meltingnieiins whereby :ill 01"' the bludts ure ri,-'idl}YV inuintuiued in position und operi-.hie biitlie huiitllo ne will be reutlil,7 undermtowlA `ln Fig. 4l the Contact and conducting bars ure shown us composed of two parte' oon- Sisting of the Contact. members Ta extending; tl'iroug'h the frame 9 und Supplemental etensions 7" overlapping said Contact. .meinq llt) bers as shown, in pairs, both of said sets of bars being secured Within the frame and bases by the same means already described. The advantage of thisconstruction is that I am thus enabled to utilize shorter lengths ofV In Fig. 5 the contact and conducting bars 7c are lapped upon extension bars 7d and vtrained together'in the same 'general manner, providing 'more closely adjacent' bus bar connections, While in Fig. 6 the same eiect is produced by extending the bars 7e clear through and bringing them together in pairs below the base 2. In all forms I provide a plurality of closely adjacent conductors of broadarea and carrying capacity for connection .with the blades or bus bar elements, as disclosed.

It will be observed that in e-ach construction the conductors which provide the hinge mounting' for the blades and also the vcontacts therefor, "are practically continuous clear through from. one side of the base 2 to the other, comprising conductors of undiminished area and eontactsurface lfor the bus bar connections (zo-extensive with the y area of the blade portions. The conductors are'also separated, although they constitute V practically one-.piece posts or bars. This 'I shown, and the intervening s eparators or v spacers 8 extending between the face of base '2 at one side 'and thetop of frame 9 at the other. Between these points the conductors and spacers form a laminated. middle portion of the composite conducting element or bar. l

That I claim is l. The cbmbination with an insulating base, of a series of assembled thin Hat conductor bars and spacers botlT'extendiltggv through the base and overlapping eachl oth within the base, and a holding frame xedly secured to the. bars and .spacers and to the base. f l

2. Anelectric switch comprisinga slab or panel of insulating material, a plurality of A contact strips extending through theslab or panel 'and spacing strips interleaved with the contact strips anclJ also extending` through and outwardly from oneside ofthe panel to Iconstitute a terminal member of the switch.

In testimony whereof I aix my signature in presence ot two witnesses.

CARL soHUs'rEa.

Witnesses:

C. M. CLARKE,

CEAS. S. Lerner. 

